Home / 75,915.12-104,762.88-42,381.12

Finding the Fourth Proportional to 75,915.12, 104,762.88 and 42,381.12

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Solution

The fourth proportional to 75,915.12, 104,762.88 and 42,381.12 is: 58,485.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,915.12 : 104,762.88 = 42,381.12 : x
  2. Step 2: Convert to fraction form
    75,915.12/104,762.88 = 42,381.12/x
  3. Step 3: Cross multiply
    75,915.12x = 104,762.88 × 42,381.12
  4. Step 4: Simplify right side
    75,915.12x = 4,439,968,188.83
  5. Step 5: Solve for x
    x = 4,439,968,188.83/75,915.12
  6. Step 6: Final answer
    x = 58,485.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.